Fluid-pressure-controlling valve.



P. A. NELSON.

FLUID PRESSURE CONTROLLING VALVE.

APPLICATION FILED MAR. 10, 1908.

Patented Apr. 6, 1909. 2 SHEETS-SHEET 1.

V/T/ViSSnfTS ws/fira ewf is F. A. NELSON.

FLUID PRESSURE CONTROLLING VALVE.

Patented Apr. 6, 1909.

APPLICATION FILED MAR. 10, 1908.

2 SHEETS-SHEET 2.

t movement ll.

FRANK A. NELSUN, F MINNEAPOLIS, MlNNESOTA, ASSKGNUR, Elli DEFECT AND MEBNE AfidlG-N earner series- MENTE, 'TG AlvlEltlCAN AUTUMATKG FENDER CQMFPATJY, @F MINNEAFGLIS, MKNNEQQTA,

A CORPORATEGN 6F MlNNlJdOTA.

snunarnneevnn-eonsesunrise No. senses.

lpeoifiloation or Patent.

Presented 65, 18 3353.

declination fled it, Serial No. den es.

To all whom concei e.-

Be it known that 3. l near: A. Nurses, of li linneapolis llennenin county, Minnesota, have invented, useful lm l ure Controlling a specifica- Velves, of v tion.

My invention relv fiuid pressure,

' to for control l theohgectot the in to vention is to provide a valve adapted par ticularly for use with the brake and lender mechanism of a car, whereby the operation of the brakes and the movement of the safety lender can he quickly and positivel to controlled.

A further object is to provide a valve by means of which the driver of the car can 0 crate the brakes to set or release them, in epcndently of the lender, or raise or lower the ac lender to set it in its inoperative or operative positioneimultaneously with the movement of the brakes.

The invention consists generally in various constructions and combinations, all as here- 25 inafter described and particularly pointed out in the claims.

In the accompanying draw forming part of this specification; Figure 1 is a side elevation of the forward portion of a car so illustrating my invention applied thereto.

Fig. 2 is a detail outside view of the controlling valve. Fl 3 is a vertical sectional view through t e valve and its operating lever. Fig. 4 is a top view of the valve.

as Fig. 5 is a detail View illustrating the lower casting of the valve and the arrangement of the orts therein. Fig. 6 is a sectional view on t e line a::t of Fig. 3 illustrating the osi- 'tion of the valve when the brake cylinder to port is closed. 7 is a similar view illustrating the position of the port when the fluid pressure is on the brake cylinder. Fig. 8 is a similar view illustrating the position of the valve when the fluid pressure is on the to brake cylinder and the mechanism for cperatin the fender. Fig. 9 is a detail view of the vs. vs disk.

In the dra fluid pressure t i; 2 represents a car, 3 a

and t a cylinder suspendso ed under the car and having its iston 5 connected by operating bars 6 wit a tender 2 that is god at 8 on the front oi the car. The operation of. this lender is substantially the same as the one shown in my pend-apwith a welo 27 over which a con: i.-

plicetion for l patent filed December 23, WW; his. dilZfiZd no sup; y pipe it]. connected with the p" n d check provided in the L tween its point of connection with service pipe it and the cylinder l. m with the pipe 9, and the pipes it) it and 18 extend up into the ear and are connected to nipples M, 5 and re louse portion 17 the controlling valve which has ports communicating with nipples, and is also provided with an port it. 19 is mounted iii and carries stem 20 provided with an secretion; handle A. seat 22 is provided on the top of the ease portion 17 and having ports therein communicat with passages loaded to the niples 1.4%, 15 and it}, and a i mounts on the lower end of the stem 29 and. yieldingly held in contact with the seat 22 by a copression spr 24.. disk is pro vided with ports'25 and 2d therethrough and w umcat i passe is formed between the ports 25 1: 2s 1 he operating handle is provided with a plunger 28 engaged by a compression spring 29 and carrying a dog 3d that is adapted to enter recesses 31, 32, 33 and 3d rovided in the edge of a flange 35 on the cream 19. By the a iustment of this operat ever the disk 23 may he rotated on its seat and the fluid pressure admitted to the brake cylinder or to the brake cylinder and the lender siinultaneously. I

The fluid ressure may he admitted to the brake cylinfer and held there if desired, by the simple adglustment oi the o erating lever, and in csseo the fluid ressure to simultaneously enter the brake an fender cylinders to set the brakes and dro the lender to an operative position.

,l/Vhen tne lever is thrown toward the left A pipe 113 is connected emergency can s set to allow her illustration or thereof its until the ports in the disk 23 register with the loralre supplypipe port and the exhaust port, 1

fluid ressure be relieved in the brake cylin er and the brakes-released, and the port 22 will lap the fender service pipe port and release the tender 1 With valve the 30 Y pressure tank, said brake service pipe and have absolute and'immediate control over the setting or releasing of thebrakes and the adjustment of the fender to an operative or ino erative position. 7

claim as my invention: I 1. The combination, with a car, of a fluid pressure supply tank, a brake service pipe, a ender adapted to be raised and lowered,- a.

fluid pressure fender cylinder having operative connections with said fender and a controlling valve communicating with said. fluid pressure tank, said brake service pipe and simultaneouslp said fender c linder, and \adapted when moved in one irectiona predetermined distance to admit fluid pressure to said brake service pipe whereby the brakes will be 0 erated 'independen'tl of the fender or w en moved a limited distance in the same direction to admit fluid pressure to said brake service pipe and said fender cylinder, whereby the brakes and the fender will be operated 2. The com ination, with a car, of a fluid ressure supply tank, a brake service pipe, a

Fender hinged at its rear end and ada ted to swing vertically to raise or lower its or'ward end, a fluid pressure fender cylinder having a piston and operative connections between said piston and said fender, a controllin valve having pipe connections with said flui said fender c linder and adapted when "still farther in the same direction to admit moved in one irection a predetermined distance to admit fluid pressure to said brake service pipe toset the brakes independently of movement of the fender orwhen moved arranged pipe connecting it withsaid fluidto pipe and said fender cylinder, and said valize eing adapted when moved 1n one directilifi a predetermined distance to admit fluid pres sure to said brake service pi e to operatetlle brakes independently of sai fender mechanism or when moved still farther in the same direction, to admit fluid ressure to said pressure tank and with said brake service brake service pipe and sai fender cylinder simultaneously, whereby the brakes will be set and the fender lowered with one opera tion, and said valve having an exhaust port arranged to communicate with said brake service pipe and said fender cylinder when said valve is moved a predetermined distance in the opposite direction, substantially as described.

In witness whereof, I have hereunto set my hand this 2nd day of March, 1908.

FRANK A. NELSON.-

, Witnesses:

J H. BALDWIN, RICHARD PAUL. 

